On the main board, probably not. Some Yamaha things have +-18v on
the power supply that is further regulated to +-15 on the main
board, but those parts won't be under as much stress as the PSU
caps. You could take a look for leakage or swelling on those if you
like. I've never personally needed to replace those.
Anything that is suspect on the PSU should be changed. I've had a
couple of small signal resistors and ceramic caps on the PSU that
were eaten away. You might not know until you start the removal and
cleaning of the PSU.
GB
On 11/13/2020 7:22 AM, Gunter Weeks via
groups.io wrote:
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Just
a quickie,
Ive ordered all the Power supply Caps.
Is it worth re-caping the main board It sounds fantastic No humm
etc..
Do I need to replace all the other type of Capacitors too?
Whilst Im doing this I thought I would re-cap my Original 1979
Korg MS20 Had it since new and this is starting to hum and there
are a few driy joints on the board which I thought I would re-flow
at the same time.
Regards
